Optocouplers / Photocouplers

Optocouplers are a type of isolator that use a low-power optical signal to transmit one signal from one circuit to another independent circuit. Optocouplers are comprised of an infrared LED light source and an integrated photo detector which usually consists of a photodiode and detector circuit. This optical link or coupling provides electrical isolation between the two circuits which makes the trouble shooting and reliability of circuits more straightforward. These devices are often used to provide electrical isolation between digital signals on the same board, but they are also commonly used in medical and industrial instruments, motor control systems, and signal conditioning circuits. Optocouplers have very high input-to-output isolation voltage and low capacitance, which makes them suitable for signal transmission in high speed applications. Additionally, they manage the call back current of the circuit they are connecting, allowing them to protect against overloads.
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Hot FOD8173SD


Transistor Output Optocouplers Opto Phototransistor Output SM-DIP4
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ON Semiconductor 230411
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AUD 0.1591
Multiples of: 1

MOC217R2M


Transistor Output Optocouplers 8-Pin Optocoupler Phototransistor
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ON Semiconductor 223100
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AUD 0.2741
Multiples of: 2500

PC817CS


5kV 50mA 200mV@1mA,20mA 1 6V 1.2V DC SOP-4 Transistor, Photovoltaic Output Optoisolators ROHS
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AOTE 213746
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AUD 0.0348
Multiples of: 20

MOC3023SR2M


Optotriac; 5kV; Uout:400V; without zero voltage crossing driver
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ON Semiconductor 198850
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AUD 0.3485
Multiples of: 1000

TLP185(GB-TPL,SE(T


Transistor Output Optocouplers
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Toshiba 197123
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AUD 0.1038
Multiples of: 5

TLP181GB-S


Optocouplers SOP-4 RoHS
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Youtai 194839
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AUD 0.1009
Multiples of: 5

MOC3021S-TA1


Optotriac; 5kV; Uout:400V; without zero voltage crossing driver
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Lite-On 194000
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AUD 0.0651
Multiples of: 10000

TLP291(GB-TP,SE


Transistor Output Optocouplers 50mA 80V Gen Purp 50mA 1 Circuit
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Toshiba 190386
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AUD 0.1118
Multiples of: 5

EL3H7(C)(TA)-G


Transistor Output Optocouplers 200-400CTR 3750Vrms -55 to +110 Op Temp
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Everlight 189861
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AUD 0.0686
Multiples of: 25

TLP785(GB-TP6,F(C


Optocouplers SMD-4 RoHS
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Toshiba 168556
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AUD 0.0997
Multiples of: 5

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